Wire-twisting machine



(No Model.)

4 Sheets-Sheet 1. E. E. 8.-. I. A. KILMER.

WIRE TWISTING MACHINE.

No. 247,362. Patented Sept. 20,1881.

llllmm Inlllllllq/{IKHUIGI WlTN ESSES l v NvENToRS ww ATTVZZSI (No Model.) 4 Sheets-Sheet 2..

EXE.. su I. A. KILMER.

WIRE TWISTING MACHINE.

No. 247,362. Patented Sept.-20, 1&981.-

(No Model.) 4 Sheets-Sheet 3.

E. E. & I. A. KILMER.

WIRE TWISTING MACHINE. No. 247,362. Patented Sept. 20,1881.

WITNESSES INV NToRs @wf/mw *ffm* ATTORNEY UNITED STATES PATENT OFFICE.

ELMER E. KILMER AND IRVING A. KILMER, OF SOHENEOTADY, NEW YORK.

WIRELTWISTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 247,362, dated September 20, 1881. Application inea Apm'i 23,1881. (No model.)

To all whom it 'may concern Be it known that we, ELMER E. KILMER and IRVING A.K1LMER, citizens of the United States, resident at Schenectady, in the county of Schenectady and State of New York, have invented certain new and useful Improvements iuVire-Twisters and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, Aand to letters or gures of reference marked thereon, which form a part of this specification.

Figure l is a perspective view of the device. Fig. 2 is a vertical transverse section, showing the vise. Figs. 3, 4, 5, and 6 are detail views, showing different parts. Fig. 7 is a side elevation. Fig. 8 is an enlarged detail section, showing the tension spring on the driving-shaft. Fig. 9 is an enlarged detail per-` spective of the yoke and the notched driving# wheel.

This invention relates to improvements in machines for twisting wire.

The invention consists in the construction and arrangement of parts hereinafter set forth.

In the annexed drawings, the letter A representsasupportin g-frame, havin glegs cm and Vtop a2, having opening a3, and upon the sides of the opening the strips a4 a5. Secured to these strips on top by its side pieces, b b', is the metallic bed-frame B, the opening b2 of which is over that of the table A. One end, b3, of this frame B rises up above the sides b b, and has the plate C secured to its inner face andvertically adjustable thereon by slots c and set-screws b4, which said plate C has the outwardly-projecting liange c at the top. Rigidly secured to this plate C, but with a space,

c2, between, is the xed jaw D of a vise, D, the loosejaw I)2 of which is pivoted at el to the plate O, leaving a space similar to intervening space c2, and braced from jaw D' by the Atie-plate c4. These jaws are provided with the wear-plates el d2, the latter having the `groove d3, and held adjustably upon the top of plate O by the set-screw c5 is a support-plate, d5, which has a stud, d6, extending down into plate C and bound by a screw, c5, and which regulates the position of the wire with regard Afalls by gravity into place.

position may be broken.

to the vise. Adjustably secured by an arm, e, under liange c', to plate C, is a bracket, E, extending out from said plate away from'the rear of the table A, and having the returning arm e', pivoted between4 the branches of which is the lever F, having its front end,f, hinged and held in align ment by stops f', the said end having an upward swing and provided with -a hook,f2. This lever F is loosely held by a bolt,f3, in a fork, g, at the upper end of a conmeeting-rod, G, in another fork, g', of which is loosely held the end h of a cam, H, havingits head L pivoted in a strap,h2, which surrounds thejaws of the vise D, and is adjustably. held lto the'xed jaw D by slot and screw and by .wire and swings back, thejoint coming in front of the wire, and after passing the front end A spring, i, returnsthe treadle, (a stop preventing too much play,) releasing the vise, and the hook f2 throws the loop off, the lever thus acting as an ejector as the retractile spring hG draws back loose jaw D2..

In a former patent to us is shown a platespring within the visecorningbetween thejaws, being a pressure-spring, and which from its The spring h6, being outside, is in no danger of being crushed, and is therefore an improvement.

Held adjustably by bar 7c, bolt 7c', and a nut upon the top of sides b b', is the carriage K, having the end brackets,k2 c3,between the top forks, 7a4 h5, of which is held the bearings L M, made adjustable by bolts l m and bindingscrews Z m. Sleeved through these bearings is the driven shaft N, having at its end oppo- ,site the vise the chuck n, in which is secured n3, and is furnished with an eye, n, in which IOC) is held a 1nandrel-post,n5,made removable, so that different sizes and shapes may be used, about which post the loop is formed when the wire is twisted, the length of loop being gaged by the distance of the depending end a6 of wire 'a2 from said post, an adjustable eye, a7, on this wire n2 regulating the position of the Wire to be twisted up and down on the mandrel-post.

On the periphery of the chuck n is formed or secured a stud, ng, which, engaging a springpawl, a, prevents back motion. Keyed to shaft N, about'mid-length, is a block, 0, between the face o of which and bearing L is a stout spiral spring, Z2. Surrounding said shaft N, and between its face o and bearing M, is a tube, P, through which the shaft passes, said tube being loose on the shaft, but held to engagement by a ratchet, p, at its end p', and a pawl, p2, on the face o of block O. At its other end, next bearin g M, this tube Pis surrounded by a barrel-sprin g, Q, held in a guide, q, and secured at one end to the tube, and at its other to the carriage, said spring operating in a direction opposite to that of the ratchet at the oth er end of the tube P` Secured at one end to tube P, and wrapped about between the ratchetand the spring, is a chain, R.

S S are twoAbracket-arms, which springup from the side b of frame B, having in their bearings s s a shaft, T, the ends t5 t of which project, one, t5, having the spring t2 to check rotation, the other, t', a crankarm, t3, to the end t4 of which is adjustably connected the loose end 1^ of chain It. The spring t2, being bound between the bracket-arm S and a nut on the end of shaft by pressure, keeps the shaft from flying back with a jerk. l

Loosely sleeved upon shaft T is a wheel, t, having in its end toward bracket S the notches t5, with abrupt shoulders t", and sloping ones t. Keyed to shaft T, between this wheel t and bracket S, is a case, Y, in which is placed parallel to the shaftaspringactuated bolt, c. This bolt o slides in the case V, the action of the spring 'v' being to throw it into one of the notches t6 of wheel t, the said bolt having a finger, o2, which projects through a slot, o3, in the case.

Projecting upward from the side b of frame B,between brackets S S ,is another but shorter bracket, W, having two curved arms, fw w, arranged in the plane of wheel t, and located at its, notched end, said bracket having also on the side away from the wheel the guide-eyes w wz. Below these guide-eyes, and in line therewith, is a rod, X, having the guide-fork w.

Through eyes w w2 passes a rod, Y, having sleeved thereon, between the eyes, a spring,y, and above this a key, y', passing through the rod, the spring pressing between eye w' and the key, the latter bearing against eye wz. Above eye to2 this rod Y is provided with a head, yzfcoming alongside of the arms w w of bracket NV, and having the arm g3 projecting toward the bed-frame concaved on top, pointed at the end yt, and having the beveledoff surface g5, which terminates at a shoulder, y, just beyond the vertical plane of rod Y. Just below the eye w this rod Y has upon opposite sides the grooves yi, the lower end of the rod passing through an eye,z, at the upper 'end of a connecting-rod, Z. This eye z has a hole, z', fitting the body of the rod, and a slot, z2, ttin g the reduced portion at the grooves yi.

The rod Z is held in the fork w firmly by a spring, z3, and has a curve, a4, just above the fork, and is operated by a treadle, Z, returned by a spring, z5, and limited by a stop, z. The spring z3 operates to hold the slotted part of the eyez in engagement with the reduced portion of rod Y, by means of which engagement the rod Y is pulled down when the treadle Z is depressed until the bend a4 bears against the fork m and moves the rod Z 0E, so that the rod Y slides into hole a', when the compressed spring g/ throws rod Y up, and the treadle being released, the spring z5 throws the rod Z up for another stroke.

In operating this machine the wire is bent around the mandrel-post and passed between the jaws of the vise by pressing on treadle I, as before described. Power is applied to wheel t, running loose on shaft T, and to propel the machine the treadle Zl is depressed. This pulls down rod Y until its head comes below the end of finger o2 on bolt c, when spring o shoots the bolt toward wheel t, catching in one of the notches t6, and bearing against shoulder t", locks the wheel to the shaft and causes the latter to turn.

In case one of the notches t6 is not in line when the bolt' is shot, the base of the arm ya is made wide enough to catch the linger o2 and keep it from dropping back behind shoulder ys when rod Y comes back, and the bolt is ready for the next notch. As the wheel and shaft now turn, the crank-arm t3 pulls on the chain R, causing tube P, and through the ratchet-and-pawl connection the shaft N, to turn and twist theloop, at the same time compressing springs Q and l2, the former by rotation, the latter by endwise play of shaft N, the latter heilig pulled by the twisting up of the wire. When the crank reaches the extent ot' its throw the spring Q, unwinding, turns tube P, the ratchet slipping thereby, winding up chain It, pulling on crank-arm t3, which would turn shaft T with a quick jerk, but that the spring t2, at the other end of shaft T, checks the action by bearing hard between bracket S and the nut on said shaft. During the rotation, when the end of nger o2 reaches the bevel g5 of arm ya, passing along this, it draws the bolt fu from the notch in wheel t, allowing said wheel to run free and ready for the next loop. During the twisting pressure is kept on treadle I 5 but when the loop is made the treadle is released, when the vise opens and the ejector-lever F throws out the loop, as before stated, and spring Z2 throws the shaft back.

It' desired, the device may be operated by a treadle, A', connected tothe drive-chain It.

It will be seen that the various parts of the IOO twisting device proper have been made adjustable,whereby all wear can be compensated for and a true alignment made.

We claim- 1. The vise D, one of the jaws of which has a groove, d3, in combination with the adjustable wire-support d5, as set forth.

2. The mandrel-post n.5, in combination with the adjustable wire n2 and eye a7, as set forth.

3. Shaft N, tube P, and spring Q, in combination with chain R, crank-arm t3, and shaft T, as set forth. Y,

4. Rod Y, having the notches y", in combination with rod Z, having eye z, formed with hole z and slot z2, and means, substantially .as I5 described,for changing the position of' the eye z on the rod Y, as set forth.

5. The head Q2, having the beveled arm 1/3 and shonldery, in combination with the springacted bolt o, having finger o2, as set forth. 2o

In testimony whereof we afx our signatures in presence of two witnesses.`

ELMER E. KILMER. IRVING A. KILMER.

Witnesses EDWARD DAvIs, H. SEYMOUR. 

